The abundance of companies which produce knives leave you undecided and confused. In this myriad of options it’s very important to find a qualitative product which will meet your expectation for a longer period. Many expect to buy a knife which will serve the whole life. However, nothing is eternal and sooner or later even the best knives will disappoint you. You are asking what knife is better for you. I would buy a professional and more expensive one like the Japanese Shun, than a cheap one which will start the corrosive process no later than 2 years.
Check here to read the difference between Shun and Miyabi. Both are considered professional and popular all over the world.